compression ratio depends on what piston you go with and the condition of the top of the block and the bottom of the head. and I built my block for 1900 bux

Yes, I was wondering what C/R ratio pistons Tom installed - so I probably should have asked the question that way. I was targeting about 10.5:1 given I have a stand alone ECU that is completely tunable for ignition advance (so I can be conservative with setting that impact knock).

Tom, another question, is the block you build safe to spin to 7,500 - 7,600 RPM?

No way I would build a 10.5 compression engine and run anything less then 100 octane , what octane is going to be used

Yes I wouldnt go past 7600 and still stay wet sump

Tom

Thanks Tom. I would be running 93 octane and won't spin past 7,600 RPM. I would of course like to run the highest compression ration that is practical. With the forged pistons you install in the block, is the C/R 9.5:1? Also, it would be naturally aspirated only.

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